Dynamic modelling of planetary gearboxes using vibrational analysis

Imthiyas Manarikkal, Faris Elasha, Dina Shona Laila, David Mba

    Research output: Contribution to conferencePaperpeer-review


    . Planetary gearboxes failure has been a major problem in
    systems reliability, hence condition monitoring of this component is essential.
    In order to identify faults, a dynamic model of the gearbox is
    presented taking into account backlash and tooth cracks. Newtonian
    equations of motion developed for a planetary gear is solved and modal
    analysis for solving the lumped parametric differential equations of modelled
    single stage planetary gearbox is adopted to observe the vibrational
    responses and to compare with existing literature. This work focuses primarily
    on the effects of stiffness and damping. The eigenvalue problem
    has been solved to measure the natural frequencies and amplitude of the
    system. Parametric studies using stiffness and damping results indicate
    significant changes in vibrational signals when there is a crack present
    on tooth. Simulation results also show the relation between increment in
    backlash and high frequency responses in the resultant vibration.
    Original languageEnglish
    Publication statusPublished - 2018


    • Gearboxes
    • Diagnostic
    • Helicopter
    • Prognostics
    • dynamic modeling
    • MATLAB
    • ABAQUS
    • ANSYS
    • LabVIEW


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